HALF LOTUS

You can decide on how to sit when doing tantra. A half-lotus position is near ideal, with the options of having legs stacked on top of each other or having both legs touch the ground. Both will yield different postures, so identify which allows you to flex the PC muscle more comfortably. An alternative is the frog position where you sit with your legs wide open, your knees touching the ground on each side and the soles of your feet touching each other. The frog position requires more flexibility but it can be useful since it naturally allows for more tension in your pelvic area.